gnathopoda

Definitions

from The Century Dictionary and Cyclopedia

The xiphosures or horseshoe crabs regarded as an order of Arachnida.

In some systems of classification, a subclass or suborder of Crustacea, corresponding to Entomostraca in a broad sense; the lower series of the crustaceans, contrasted with the malacostracans or Thoracipoda.

An exact synonym of Arthropoda considered as a prime division of a phylum Appendiculata (which see).

Etymologies

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Examples

At the time of birth, the larva, like that of the Brachyura, has only the two gnathopoda developed, whilst the termination of the tail is like that of a fish, as in the Macrura.

The difference of the sexes which, in the Gammarinae is usually expressed chiefly in the structure of the anterior feet (gnathopoda, Sp. Bate) and in the Hyperinae in the structure of the antennae, is often so great that males and females have been described as distinct species, and even repeatedly placed in different genera (Orchestia and Talitrus,